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Constant Temperature Volumetric region

Posted May 6, 2012 at 15:33 by peterliu

how the energy equation implemented in FLUENT

Quote:
Originally Posted by evcelica View Post
Yes Glenn, that's exactly what I was saying, for example:

E.genSource = (T.desired - Temperature)*c.p*density*(1/time constant)


It still not instantly switching to the new temperature, as you still have some sort of a time constant but you can make it very very small.
What you choose as a time constant will be where it starts approaching your temperature, so you could choose 1sec or 10^-whatever
...
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Old

Testing Engrid installer on various Distributions

Posted May 6, 2012 at 09:29 by elvis

I tested the Engrid installer

mkdir ~/Software
cd ~/Software
wget http://sourceforge.net/projects/engr...1.3/build.bash
source build.bash ubuntu-11.10

worked fine on ubuntu except for 12.04 „Precise Pangolin“
also no problems on aptosid except for aptosid 2011-03 "Πόνος"
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Old

Set (Initial) Internal Fields Using #codeStream

Posted April 23, 2012 at 13:55 by Hisham (Notes for OpenFOAM!)

To set up (initial) internal fields of variables according to an expression, one can use the #codeStream feature as:
Code:
internalField  #codeStream
{
    code
    #{
        const IOdictionary& d = static_cast<const IOdictionary&>(dict);
        const fvMesh& mesh = refCast<const fvMesh>(d.db());
        scalarField fld(mesh.nCells(), 12.34);// uniform value of the field as 12.34 or just fld(mesh.nCells())
...
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Old

Generating nonuniform meshes with sizefunction

Posted April 18, 2012 at 21:57 by sunliming

Generating nonuniform meshes with sizefunction
---------------------------------------------------------------------------------
Quote:
Originally Posted by alberto View Post
Hello Ehsan,
the trick is exactly the one explained by Hrvoje in this thread.

Create a uniform mesh, with the number of nodes you need in the three directions. Then write a small utility which:

- Reads the mesh (see how this is done in all solvers or mesh manipulation utilities).

- Does

pointField
...
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Old

libOpenSMOKE - Making it work once again with OpenFOAM

Posted April 14, 2012 at 05:43 by wyldckat
Updated April 21, 2012 at 08:33 by wyldckat (updated current status)

The other day Tobi asked for my help on building http://www.cfd-online.com/Forums/ope...opensmoke.html
After looking at the code and doing some trial and error, basing myself also on Tobi's already collected information, I managed to get it built/working with OpenFOAM 1.7.x, 2.0.x and 2.1.x.

And since the original page only provided a rarball (on Linux?) of the source code, I decided to use my github account to harbor the original code along...
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